From 68710ed0066d3b3d9cbece33d116fa7fa3b6ad73 Mon Sep 17 00:00:00 2001
From: nolanzzz <nolanwork131@gmail.com>
Date: Thu, 2 Sep 2021 23:47:00 -0400
Subject: [PATCH] =?UTF-8?q?=E6=B7=BB=E5=8A=A0=200242.=E6=9C=89=E6=95=88?=
 =?UTF-8?q?=E7=9A=84=E5=AD=97=E6=AF=8D=E5=BC=82=E4=BD=8D=E8=AF=8D=20PHP?=
 =?UTF-8?q?=E7=89=88=E6=9C=AC?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
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---
 problems/0242.有效的字母异位词.md | 35 +++++++++++++++++++++++
 1 file changed, 35 insertions(+)

diff --git a/problems/0242.有效的字母异位词.md b/problems/0242.有效的字母异位词.md
index 1b6b3109..3416ac06 100644
--- a/problems/0242.有效的字母异位词.md
+++ b/problems/0242.有效的字母异位词.md
@@ -221,6 +221,41 @@ func isAnagram(_ s: String, _ t: String) -> Bool {
 }
 ```
 
+PHP：
+```php
+class Solution {
+    /**
+     * @param String $s
+     * @param String $t
+     * @return Boolean
+     */
+    function isAnagram($s, $t) {
+        if (strlen($s) != strlen($t)) {
+            return false;
+        }
+        $table = [];
+        for ($i = 0; $i < strlen($s); $i++) {
+            if (!isset($table[$s[$i]])) {
+                $table[$s[$i]] = 1;
+            } else {
+                $table[$s[$i]]++;
+            }
+            if (!isset($table[$t[$i]])) {
+                $table[$t[$i]] = -1;
+            } else {
+                $table[$t[$i]]--;
+            }
+        }
+        foreach ($table as $record) {
+            if ($record != 0) {
+                return false;
+            }
+        }
+        return true;
+    }
+}
+```
+
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